Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Timothy R O'Leary, MD

Individual provider Radiation Oncology Physician · NPI 1700992294

Timothy R O'Leary, MD is a Radiation Oncology in Festus, Missouri. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1989, 37 years ago. Practices with West County Radiological Group Inc, a 105-clinician group and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
37
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
IL, MO
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1350 US Highway 61
Festus, MO 63028-4124
Phone: (636) 933-0303
Fax: (636) 933-0293
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 102187 (MO)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 036095208 (IL)

Record details

NPI number1700992294
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 21, 2006
Last updated in NPPESJune 21, 2021
Certification dateJune 21, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice West County Radiological Group Inc — 105 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare